합성 샷

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 1y
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an info sheet describing the different types of water and their uses in construction, design and manufacture
大学生工业设计大赛官网
an underwater device floating in the ocean next to a buoy with a light on it
Empresas se juntam para criar drones e reverter poluição marítima
Além de ótimos na captura de imagens e até como equipamento de guerra, drones podem ser usados em prol do meio ambiente!
an advertisement for the smart lifebuoy dolphin
Dolphin 1 remote control lifebuoy / life ring for water rescue